1. The problem statement, all variables and given/known data 2. Relevant equations ΔUelastic = 1/2(kxf2) - 1/2(kxi2) ΔK + ΔUg + ΔUelastic = 0 3. The attempt at a solution a) I used ΔUelastic = 1/2(kxf2) - 1/2(kxi2) and found xf - 0.126 m. b) Should I use ΔK + ΔUg + ΔUelastic = 0? I am unsure where to start for this one. How do I go about setting this up?